Thank you for looking! The vertical half of the sleeves, the sides, and the back are made of cotton shirt material. It's an interesting design. The ribbed knit is white, and the shirt material is off-white. It's see-through, so I recommend wearing an undershirt. I've shown close-ups of the neck and wrist areas, but the dirt isn't very noticeable. The shirt material wrinkles easily. Please refrain from purchasing if you are overly concerned about details. Thank you! ^ ^